I vote for shield #1 and crest #2.
Regarding shield #3, you only need to fimbriate the sides of the flaunches—do not outline the entire Or section.
Sorry, you are right, but my ability with the graphic software is limited to the rotate an flip tools.
This poor horse is lucky to live in these days when a broken pastern does not means necessary a death sentence.
I like shield #1 with the crest of a horse holding the cross pattÃ©e fitchy. I think that this combination tastefully retains all of your original design elements.